SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '8a93a94e4534515d1359ca64c93bbffd8d5c826b6960d0c84b17b0312eb590e8' 
  AND token = 'NES/2GGMUgVqYvydS1M+xt/OH4gF0g8ptbBBIF71lCg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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