Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '92a62363e721a87568b88c2674cc64cc69faa12a01cec62eb7c28757d6b0de60' 
  AND token = 'BG7yOq66xtWV0oMmPXvRVdnH6i20ELVQyYm2s4sBV80=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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