Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ceeafc747e5369732648ebc39c48c39d1d062b9821a80ba84bd83569051b41a4' 
  AND token = 'OpmL9uDdTJzmn4K7eoVbN6cnL255YcTgKeJjrSyPdbM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00011

JSON explain

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