Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9428e93d4beb5aa1200cb5c329143036123ef274bf57f20f996255a7ba5179a0' 
  AND token = 'Cd5LFABVYM2YK1TDmQE9eg8W3m89i7bBcBkJOjEQI6M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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