Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cda1f88d769a05bdf7956626e6246e29f3ff7c8efb7a283d04e159bf65bf52ec' 
  AND token = 'CfQX13XyE0sToPrmt5Me2M6XjTkoIwormicl6rArHCQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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