Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '39126e0d645123ac5bad00cfa20c51e2a5aed158236b6869ec959a3d76b92e08' 
  AND token = '/9ng4AzpP49FQP6+KsEI8vFFmq/l9ksb+Fuyr3dw3+8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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