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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '41e480ba072118e53db43cc453819d7de09bd6127e031e9a39a5bf2af280dd43' 
  AND token = 'q2/0lNnIU0ciLuG7kcaGFdYJ/8L/RQ++aqURSMrNAPA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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