SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '0c1bd1e91b3055c0c80bed81365a749e7d828ac37d2ed7f7c3b5d648f2050043' 
  AND token = 'hHz3QJ/M647n6J2Etf+rMg82bkUlYVcHs1A5VuX3vmg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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