Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6771831c8d5521dead88803777055bb4fe2be1b913924a0260f0cd78c4821616' 
  AND token = 'yt/0wjEkGd3SWMWEuRpnh9XaMk6OMhCCyRcSR8KWYiI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00013

JSON explain

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