Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'edeccb74942338db3c15f0233a51f2ce07e89b7a6149503325a114e77f86bc6e' 
  AND token = 'sxttSc1lguW0jrbABdQebLoLnLWTFIrrdtK92tikTa8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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