Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd563db5c70515e3ca7b7908a71265dd9c0fbd4d843de53954727e9514777f96c' 
  AND token = 'tmrM5muSqY+ol7hV4S4ZaS/oNurXEbtYln2G5Rrmh70=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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