Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f023babd5e399eeb9c3b5eb99e41705636f949bc59d7ce34740dde5a7814de25' 
  AND token = 'y0CqSy82/08CnBBXa2hsXa5gt/sioYtynnYvc+4o8Gk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}