Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '1ed5c1a2540408dedc4e12de80a06501ba5939ca87ce83904c316ba762df49c7' 
  AND token = '259JDFYf/EkY1nr3A7mp8kbZnLAjYPDnwJFA4HzSmCA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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