Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'f7ba1ea9c3d163a7765c3710257847b0520476477ad3952b444f4f78faa901da' 
  AND token = 'EbqBrvsJSgtUTG2uE31DtfqYlQ1jd6EKkrYbv18gaUQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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