Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a4ecd636048c82e8140ce49bfb0aebcc195e5730e534b58290c7977cf5806fc5' 
  AND token = 'c90AuV1H67vr4zepGxA3Qy1EGTwlCHJt9fD+Ev4crDM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}