Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2aad922ca429ecf473e4c4d01ffd1077816170bb67f1fcc336619f83a200fc27' 
  AND token = 'i7f2c3mDhVB7i74F+g92r24XD4bjgTSXYTEg+Q6vit4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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