Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '723562d487410d0d75717ea9cff50c46e468545fa07153e56d0557490e8d6218' 
  AND token = 'LVEnWYubiEOhmv3GZ0M0uTm3yJMyu9NuDmpK5NmLGlQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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