Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '62e38e268a6987839be57893e93499586ee8a2e79c2205b8fcde955745a3c695' 
  AND token = '+h6fgi8hx8JxMPfYj0PUqPLCC48dHXU5J34CEHv6FI4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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