Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0aaa6bca2f1ec72f86824500278bf37c6a4ec89f6a2c449f373e157f2e32286b' 
  AND token = 'EXO0KdRCM+LrMtimpHy4gIgoQrrz409ijLp7S9Z+CsM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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