Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '930beb29bdfa7bceb16235f0b2388809ff0f30bd53c49a5c61f73cd042e4ea3e' 
  AND token = 'IzgiyTZ9CyskV2mnEUglc+8t8AA126+4tkLyfWxJVSM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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