Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fb744462dcf1f95eb7ac76e41c1f348f470b9f95581865d4c775901ab5e69de7' 
  AND token = 'GEb1YVM+iruJYSSSpWMjJUlAhiWpaZeSG/hWNAew02Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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