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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9199630b93597c55a0a2845059950c610a1be0eb02bfb49ac1095e6f070e9251' 
  AND token = '1hXrP7Y/UxJfHNl6B6L55pX3EJKgr3Rh++1cT3ir9vw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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