Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b7935619dba37c6d700800cb5b0754ce3c5061935c156a6196efed4153f47455' 
  AND token = 'g0MTaStoizVJwivxZYjD6rGvVVxPfSiUtZC/0GE4ZaE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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