Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bd022fe2eee1845c10cdbe7bb01e2f4b34dac0948306317e3a1fb5457468f407' 
  AND token = 'Ooqm6bim94w427tGn412jrDQ+BU6grSQ39QFA+mcCj0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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