Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ea424f9b1818eef5ea40b0a0d4acbd89fe43b6ca8eb2efc7e81e9b147dfa5c02' 
  AND token = 'JVXJ7PEWtA1dj+1lrYFfwvm7RsHN5tvzBsN2idfip+c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00013

JSON explain

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