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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '43da90638d358a97f8e0eee672c1f687726202246dd9612e5ceab889efa6d959' 
  AND token = 'Cc/awvpSuXfCyvM1ZTlyyMpluYlrru1KiU32543HSZQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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