Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ced905b4f8dff95d3672fa9eff1297ebf406bd88934f9bcc063cf92c7bb399fa' 
  AND token = '0dCMInIJiIRy70/NCJ0EUpCmzgjO+N9DMfp31w9KRP0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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