Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '316187eebb49e286a5ecc321b67bb9157e75fa58d9efb762d8813e1eac390968' 
  AND token = 'zTP00s2fxq5kpsAXhr0gLPT5ymtOJj5J8SPtKROhc6A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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