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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '87c080ec7690d0bb60c29ff3e4800e3b2fe192b3821c8de19fb2726baaec89e4' 
  AND token = '5GCl7EA0QMjmUCwPNfO71v5xNPSDRkeYTyVbf5RJFGk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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