Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd0abbcdaf13797a6a0c6f41cfbd037ab067eff2476abe1b989f94e57091915bd' 
  AND token = 'SSQkwUk92QCeCVkNw2tdK56TGj3kpIdZ3POR3KM4UI4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}