Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6dddea956b0051552793869069e53088dcbe1bea8d159d8bfd1f1498ac952326' 
  AND token = 'xTPtAbPjY7vQbREV6HWiYf2bGrKrUim+ZsEeWoRy54E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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