Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6e7632da27cf0a3fc01d01dfb2d8f25b90e89c22071857f4a0250e0c64747df7' 
  AND token = '4GAvGvv4hyJAnvs85Zi3lgdG39NYj7z43TGFITuiOkw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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