Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5bf66a93c63d789cc04c09b7335de5389711527f13f97bc036ca1515d95d2c86' 
  AND token = 'qkdxJ3MfTyqshnro9NsuktMiiATCGOUsJKa0J+Dwbb4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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