Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3c80c9b3f10aa14936cf58971f7477e5ff7bc285c0a9d1a25787e9e54901d3f7' 
  AND token = 'Fqx39qmqU8xWOG2uu913HPUfVBaLW62naZA858yGbyA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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