Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ff705e36506f603afb1115e3d583a355cb73d1bad66a92dcf186bd3e158622b0' 
  AND token = 'cIZsh8YkcVATDcPKnHl8BI4mrhoDc7p+4ik2a0tVVyc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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