Sandbox

SELECT 
  1 
FROM 
  cscart_multi_declock_keys 
WHERE 
  key_id = 'c674cbb2d437979f1a6103b4e8b77a1066f3e10c6e9a48c98fcfaf51efd1a5e7' 
  AND token = '9q05rXPcFs3NspGtMScmSSFqNtOcABeuAUN/OS/8pGk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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