Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '336487771880a1fbee5817a0b161ff8e5170b889741bcbd7309eaa26b2b7c2ba' 
  AND token = 'sMUpNwy3JhFyGRoSfNpGkL0fuXP6unGqaerLwZu97cU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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