Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = 'b052991662a4da289afee5c19f642b917d5d1517cafec8b050368a1efc338515' 
  AND token = '5CX+65VEM0jadn1MSX7Pk4pGLx+k9o70EIVtJoNOkb8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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