Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6f33de8d94c5972014cb6dd3c94f346cfc111304e285dab7f5e3c9d07523bc42' 
  AND token = 'FvbrUsc57ARCy69kb9CHFyjZAep88no8jXyAsDdKEiI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00067

JSON explain

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