Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '514e57103cc3c96a039174d7cf5114be6167479bb4837d6f5fb4546d3289ebd5' 
  AND token = 'FqN9OTEajLSPzPAAFFeWc0YiwdrLqGWmrmbEgcSKexA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00014

JSON explain

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