Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2aa1fabf31045ce1cf6d4240a68cc9379b8ef7e2e92ca3fa6fd751f1eb8b5287' 
  AND token = 'WWcKA5O2nUa/ohWucd4byciA380Pd7bybbDPySW9EW0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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