Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '87850fdc5648452ddd9e00657dee7a9b017d72c2065b32ea8a205c66c32cb440' 
  AND token = 'uNmBR20haJ8NnadP25uf62GYeNSmy4cm5M+NzIgfX1A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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