SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'da4aeb58ff53921325110ea32321b0995dc8ad375f8f408a080e936ead3624f1' 
  AND token = 'qVCXjGrLi78zZBTbNeB5ToiCCQ+2pb6GG7mHqNPNUnc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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