Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4df38c08aebff5050a5a481a9ffcead06908f045897a16f297a13c3849778004' 
  AND token = 'Tn7uMsQyOQvJmg3bZ+WuSu1wAFmKP9S8chpxLrF9tBM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}