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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1a970679043a979699cd837eaa3c3683f77581cc0fd920aa9d5b154f86501aad' 
  AND token = 'bXbfJ9HMgNaO2PMAGuVBO/0y86QRKHqtodX+TaCRJNg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}