Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a9b2f8d8727505da5f4d35565b2e4c6f9e3264951f4d6f4a996c01bc70e59b60' 
  AND token = 'ZKSitXToArHsK/fJPI1cuhTmD3XCpvd5bqT8uPQwqdo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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