Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c70da7a3deab1a774830cb33bb0c22f505b884babce74885f8a8bebd946797ee' 
  AND token = 'f3lIdttf4oJyOnWsXC83d6XNsedbE7m8wqfCCteC10k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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