Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '542e97f6a11f5d5297ef68d4d3de4ce8bf73338c8ae29a1f33db96f64623defd' 
  AND token = 'Hjt6t2yb8hwY9JuPg/wZefJct4EWOosdHrirYRHrCT8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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