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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '9a4f4dee11e7d9070409c81a2370f7e95f81dc1adacba0e88db15e7742f09883' 
  AND token = 'k/gT0Du2PcREn+7wxY6H7dHlk39VXAlAJVKWjMmu+k8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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