Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'be3f2e1e14b0c9484a79905ddc6eb487c265812f708241814b1694f875c3ed9f' 
  AND token = 'TwfkV4MbmeZ+AeDHQN97n8NzctE3njyaHocT1Ud4WTs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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