Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7febaaa74034cab69fea657f8d869a3ba5391889a9cf19edbae9aa174b89503a' 
  AND token = '9WJKqhXAUzgbsJyomiyON3mVRUg+dz2vRG0Vu3qebHc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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