Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '86182a2fc6b9947ca9801eb13ef326254f501615fa14420c461d6e6df9257ca4' 
  AND token = 'PgsyupZUXJ32B8Fmm1BXoUgj9Lj3RjmxK3b8J72oGnA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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