SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '32245dd463694670326e36917780afc14c36f0d93b6b4eb62cb69d83001e917d' 
  AND token = 'fr0SVj3eIm6Sm/fx7tJInVGNaYgLKHvrpURaucNPeE0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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