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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '84f8c7cbf17e470b18bd30388129ac57006e5e3945eb0eb21721b1ffe8664ad0' 
  AND token = 'bWaoZMv6V1388rl48/h4Jb3F1eR0CXHYQ0bSJ2WS+Cg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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