SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'b3148ddaf261f9bd18e979fe30f23afbe4c1d797e1d1608b7080f24d7f5c7e11' 
  AND token = 'kYQv10uuSCxCGYOFqTmYNDLgj8+3ppBK0rXHpP2paog=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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