Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '62a8463d39a5d3bd76b4c7880280ddc13d56b838d24dde039ef3d139712784e8' 
  AND token = 'YTnM/gXoUfWtVdv4FtkDFuXzp/aeFdjgeMLzOFjPEEA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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