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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd0ba2f4a9d13a2517d450ec9fcf5f5e413d6a052ff9d922a0a986351f7881113' 
  AND token = 'ZFJ1nFNxxwhWtPFhhw42LpHVhvrZRcmMVbcRKgQ39eA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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