Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1207fee792fabf9b62532f6f50689c45c7c51d2e4dcf99d9e793551a6cf48772' 
  AND token = 'F7Gx8/GsozEqm+gGY6za++Q4ovEmMbf9dH5xk4sOTzc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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