Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '93ee15b39cf40831e0d277c0f1db1ee69365a1c74a3bf1131c6fc3720351605e' 
  AND token = 'GRMMAbaoF0k+JxNOEYPkv5AFOiJVyRq5AyIRPLcUoog=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00059

JSON explain

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